A duodenal duplication cyst manifested by duodenojejunal intussusception and chronic pancreatitis

A 31-YEAR-OLD PATIENT was admitted to the Department of Gastrointestinal Surgery because of epigastric pain after meals, nausea, and lack of appetite. Laboratory data, including hepatic and pancreatic profiles, were within normal limits. Computed tomography demonstrated an intussusception of the transverse part of the duodenum into the small intestine (Fig 1, A and B). At laparotomy, a duodenojejunal intussusception was found, with the duodenal bulb invaginated into the proximal jejunum (Fig 2, A). The intussusception was reduced manually. A mass was palpable in the lumen of duodenum (Fig 2, B) and was delivered through a longitudinal duodenotomy (Fig 2, C). The cystic mass had a 1 cm orifice and was filled with bile. The major duodenal papilla was found on the part of the wall shared with the duodenum. The head of the pancreas was hard. A pylorus